Reinforced double-walled insert for cartons



April 19, 1955 R. M. BERGSTEIN REINFORCED DOUBLE-WALLED INSERT FORcARToNs Filed March 2. 1953 2 sheets-sheet 1 AIIII'I w 4d. MM2@ q,

19g/IL April 19, 1955 R. M. BERGSTE'IN REINFORCED DOUBLE-WALLED INSERTFOR CARTONS 2 Sheets-Sheet 2 Filed March 2, 1953 MM M 7. m a

ATTORN evs.

United States Patent O REINFORCED DOUBLE-WALLED INSERT FOR CARTONSApplication March 2, 1953, Serial No. 339,657

8 Claims. (Cl. 229-14) My invention relates to packaging structures, andmore particularly to an insert for use in cartons wherein it is desiredto package glassware and the like.

It is a principal object of my invention to provide a simple andinexpensive carton insert which will speed-up the interior packing time,as well as lower its cost.

It is a further object of my invention to provide a double-walled cartoninsert formed from a one-piece blank in such a fashion that the insertmay be erected for placement in an outer carton by a single manipulativestep effective to erect all of the walls of the insert.

Let another object of my invention is the provision of a double-walledinsert in which at least one of the top walls of the insert is notchedto receive the rim of a glass placed therein, and wherein the said topwall is reinforced in the areas lying immediately beyond the notches soas to prevent the rim of the glass from cutting through or tearing thenotches and thereby becoming loose and out of position in the carton.

It is a further object of my invention to provide a simple andinexpensive method of folding and gluing the insert to form aknocked-down or flat-folded structure which can be readily shipped tothe packager.

These and other objects of my invention which will appear hereinafter orwhich will be apparent to the skilled worker in the art upon readingthese specifications, I accomplish by that construction and arrangementof parts and by those procedures of which I shall now describe anexemplary embodiment.

Reference is made to the accompanying drawings wherein:

Figure 1 is a insert.

Figure 2 is a plan view of the blank of Figure 1 subsequent to theinitial folding step.

Figure 3 is a sectional View taken along the line 3 3 of Figure 2.

Figure 4 is a plan view of the blank of Figure 2 following infolding ofthe reinforcing flaps.

Figure 5 is a sectional view taken along the line 5-5 of Figure 4.

Figure 6 is a plan view of the completed Hat-folded structure with theparts slightly expanded just prior to erection.

Figure 7 is a sectional view taken along the line 7-7 of Figure 6 Figure8 is a plan view of the fully erected insert.

Figure 9 is a sectional view taken along the line 9-9 of Figure 8.

Figure 10 is a partial perspective view with parts broken awayillustrating a tumbler in position in the insert and the insert readyfor insertion into an outer carton.

Figure 1l is a vertical sectional view taken through the insert showinga tumbler in position in the insert, and illustrating in dotted linesthe manner in which the insert may be placed in an outer carton.

Referring now to Figure l of the drawings, the insert is formed from ablank of suitable paperboard or boxboard cut and scored to provide abottom wall 1, inner side walls 2 and 3, top walls 4 and 5, outer sidewalls 6 and 7, and attachment flaps 8 and 9, all in articulation in themanner illustrated. Inner side wall 3 and top wall 5 are provided withcut-out openings 10 adapted to receive the bases of tumblers or similararticles placed in the insert. Similarly, 'inner side wall 2 is providedwith cut-out portions 11 adapted to receive and support the rims of thetumblers. The cut-out portions 11 terplan view of the blank for mycarton minate in pairs of slots or notches, such as the notches 12 and13 extending inwardly in top Wall 4. The pairs of notches 12 and 13extend only partially through the top wall 4 and are adapted to receivethe rim edges of the tumblers. If desired, the top wall 4 may beextended outwardly in the areas of the cut-out portions 11 to form theprojections 14.

A reinforcement ilap 15 is formed in outer side wall 6 adjacent each ofthe cut-out portions 11, the reinforcement aps being of a lengthsuflcient to extend slightly beyond the outer edges of the pairs ofslots or notches 12 and 13. Preferably the reinforcement aps 15 will liealong the line of articulation between top Wall 4 and outer side wall 6and have a common line of articulation with the outer side wall. It willbe evident, however, that the reinforcement aps may be spaced downwardlyfrom the top edge of the outer side wall and have separate lines ofarticulation thereto, or may even be formed as tear outs perforatedabout all four sides.

The blank just described may be conveniently folded and glued on astraight-line gluer by positioning the blank with its reverse sideuppermost, i. e., with the side form in the lowermost surface of thebottom wall and the inner surfaces of the side walls uppermost, and bymoving the blank in the direction of the arrow A, as seen in Figure 1,the initial step in the folding and gluing of the blank being theapplication of the strips of adhesive 16 and 17 to the outer side edgesof bottom wall 1. Following the application of the adhesive strips, theblank is infolded along the lines of articulation between the top walls4 and 5, and the outer side walls 6 and 7, so as to l bring the blank tothe condition illustrated in Figure 2. When the blank is infolded inthis manner, edge portions of the attachment flaps 8 and 9 are broughtinto contact with the adhesive strips 16 and 17 and hence into adhesiveengagement with the outer side edges of bottom wall 1. The dimensions ofthe attachment flaps are such that they in effect comprise extension ofthe bottom wall, the extensions being equal in width to the top walls 4and 5.

The infolding of the outer side wall 6 results in the exposure of thereinforcement flaps 15, in the manner seen in Figure 2 of the drawings.The exposed reinforcement flaps are next coated with adhesive, asindicated at 18 in Figure 2, and thereafter infolded and brought intoadhesive contact with the under surface of top wall 4. As will beapparent from the drawings, the width of the reinforcement aps is suchthat their outer edges will abut or just slightly overlap the ends ofthe notches 12 and 13. The reinforcement aps thus serve to reinforcethed top wall 4 in the area lying beyond the notches 12 an 13.

The completed, fiat-folded insert is seen in Figure 4 of the drawings asit appears at the end of the folding and gluing operations. It is inthis condition that the insert is ready for shipment to the packager.

Upon receipt by the packager, the insert is placed in the positionillustrated in Figure 6, which is on the side opposite from that shownin Figure 4, and the packager has but to lift upwardly on the oppositeside edges of the knock-down structure to cause the entire structure toassume the erected condition seen in Figures 8 and 9 of the drawings.The structure will be held in the erected condition by the outer cartoninto which it is placed.

As seen in Figure 10 glasses or tumblers, such as the tumbler 20, areplaced in the insert with the base supported in the cut-out opening 10and the rim supported in the cut-out portion 11 with the edge of the rimextending into the notches 12 and 13. The insert may then be slippedinto an outer carton, such as the sleeve 21 seen in Figure 10, or it maybe placed in a box having a bottom 22 and a cover 23, as indicated inFigure l1. Also, in many instances it is preferred to provide a cartonin which a plurality of the inserts may be placed sideby-side, as forexample where it is desired to package eight or twelve glasses in asingle carton.

As best seen in Figure ll, the glass or tumbler 20 is supported on theinner side walls 2 and 3 in the cut-out openings 10 and 11. Theprojection 14 extends into the mouth of the glass and the rim edge ofthe glass, which lies in the notches 12 and 13, abuts the outer edge ofthe nfolded reinforcement iiap 15. The reinforcement flap, 1s alreadyindicated, reinforces the top wall 4 in the areas ying beyond thenotches 12 and 13 and hence prevents :he top flap from tearing in theareas lying beyond the notches.

Modifications may, of course, be made in my invention without departingfrom the spirit of it. For example, while I have taught a procedure forfolding and gluing the carton insert wherein the reinforcement aps areinfolded separate from the side wall in which they are formed, it iswithin the spirit of my invention to spot adhesive on the reinforcementfiaps prior to the infolding of the outer side wall panel 6, andthereafter jointly infold the outer side wall and the reinforcementflaps. This, of course, requires a timed gluing mechanism to apply thespots of adhesive to the reinforcement flaps 15 without also coveringthe intermediate portions of the outer wall, whereas the procedureillustrated in Figure 2 of the drawings enables me to use an ordinaryglue wheel for applying the adhesive to the extending reinforcementflaps. Also, it will be evident that the reinforcement flaps may takethe form of cut-outs formed wholly within the confines of the outer sidewall 6 rather than being articulated to the top wall in the mannerdisclosed in the drawing. 'Where the reinforcement aps are in the formof cut-outs, they of course will be adapted to break away from the outerside wall upon the erection of the structure.

Having, however, described my invention in an exemplary embodiment, whatI desire to secure and protect by Letters Patent is:

1. In an insert for a carton, spaced apart inner and outer side wallsconnected together along their upper edges by a top wall, notches insaid top wall extending inwardly from the inner side edge thereof andterminating short of the outer side edge, reinforcement aps struck fromsaid outer side wall and secured to the under side of said top wall inareas lying beyond the ends of said notches, whereby to reinforce saidtop wall and prevent it from being torn in the areas beyond the notches.

2. In a carton insert, inner and outer side walls connected together bya top wall, cut-out portions in said inner side wall extendingdownwardly from the top edge thereof for receiving and supporting theupper end of a tumbler, notches in said top wall extending inwardlytherein from the edges of said cut-outs for receiving the rim of thetumbler, said notches terminating short of the opposite side edge ofsaid top wall, and at least one reinforcement flap struck from saidouter side wall and secured to the under side of said top wall in thearea lying beyond said notches, whereby to reinforce said top wall andprevent the tumbler from tearing it.

3. In a carton insert, inner and outer side walls connected together bya top wall, cut-out portions in said inner side wall extendingdownwardly from the top edge thereof for receiving and supporting theupper end of a tumbler, notches in said top wall extending inwardlytherein from the edges of said cut-outs for receiving the rim of thetumbler, said notches terminating short of the opposite side edge ofsaid top wall, and at least one reinforcement flap struck from saidouter side wall and secured to the under side of said top wall in thearea lying beyond said notches, whereby to reinforce said top wall andprevent the tumbler from tearing it, said reinforcement flap and saidouter side wall being hinged to said top wall along a common line offold.

4. In a carton insert, inner and outer side walls connected together bya top wall, cut-out portions in said inner side wall extendingdownwardly from the top edge thereof for receiving and supporting theupper end of a tumbler, notches in said top wall extending inwardlytherein from the edges of said cut-outs for receiving the rim of thetumbler, said notches terminating short of the opposite side edge ofsaid top wall, and at least one reinforcement flap struck from saidouter side wall and secured to the under side of said top wall in thearea lying beyond said notches, whereby to reinforce said top wall andprevent the tumbler from tearing it, said reinforcement flap and saidouter side wall being hinged to said top wall along a common line offold, said top wall including projections between the notches for eachcutout portion extending inwardly beyond the plane of the inner sidewall for contact with the inner surface of a tumbler supported in thesaid cut-out portion.

5. An insert for a carton comprising a bottom wall, inner side wallsextending upwardly from said bottom wall, top walls extending outwardlyfrom the upper edges of said inner side walls, outer side wallsextending downwardly from the outer side edges of said top walls, andattachment aps extending inwardly from the bottom edges of said outerside walls and secured to the under surface of said bottom wall, cut-outopenings in one of said inner side Walls extending upwardly through theadjacent top wall for receiving the bases of tumblers placed therein,cut-out portions in the other of said inner side .walls opposite saidfirst mentioned cut-out openings, said cut-out portions extendingdownwardly from the top Aedges of said last mentioned inner side wallsand adapted to receive the upper ends of tumblers placed therein,notches `in the top wall adjacent said last named inner side wallextending inwardly from the edges of said cut-out portlons for receivingthe rims of the tumblers, said notches terminating short of the oppositeside edges of said last named top wall, and reinforcement aps struckfrom the outer side wall adjacent said last named top` wall, saidreinforcement aps being folded inwardly and secured to the under surfaceof said last named top wall in areas lying beyond said notches, wherebyto reinforce the last named top wall and prevent the rim of the tumblerfrom tearing beyond the notches.

6. The structure claimed in claim 5 wherein said reinforcement aps andthe outer side wall from which they are struck are articulated to thesaid last named top wall along a common line of articulation.

7. In combination for the purposes described, a carton including abottom, side and end Walls, and an insert for said carton, said insertincluding an outer side wall in contact with the side wall of saidcarton, a top wall extending inwardly from the top edge of said outerside wall, an inner side wall extending downwardly from the opposites1de edge of said top Wall, and a bottom, a cut-out portion extendingdownwardly in said inner side wall from the upper edge thereof forreceiving and supporting the upper end of a tumber, notches in said topwall extending inwardly from the edge thereof adjacent said cut-outportion for receiving the rim of the tumbler, and a reinforcement flapin the outer side wall of said insert, said reinforcement iiap hinged tosaid outer side wall along the upper edge thereof and folded inwardlyand secured to the under surface of said top wall with a free edge ofsaid flap substantially coinciding with the ends of said notches.

8. A method of forming a reinforced carton insert which comprisesproviding a blank including a bottom wall, inner side walls articulatedto oppsite side edges of said bottom wall, top Walls articulated to theopposite edges of said inner side wall, outer side Walls articulated tothe opposite edges of said top walls, attachment flaps articulated tothe opposite edges of said outer side walls, and reinforcement flapsformed in one of said outer .side walls and hinged thereto along theline of articulation between said last named outer side wall and theadjacent top Wall, infolding said outer side Walls along their lines ofarticulation to said top walls so as to bring said attachment flaps intocontact with said bottom wall with the interposition of adhesivetherebetween but without infolding said reinforcement flaps, thereafterapplying adhesive to the extending reinforcement flaps and theninfolding said reinforcement aps to bring them into adheslilveengagement with underlying portions of said top wa s.

References Cited in the tile of this patent UNITED STATES PATENTS1,351,740 Boyd Sept. 7, 1920 2,339,555 Glass Jan. 18, 1944 2,368,753Elliott et al Feb. 6, 1945 2,426,899 Pantolone Sept. 2, 1947 2,447,243Freel et al Aug. 17, 1948 2,511,569 Davis et al. Iune 13, 1950 2,593,430Frankenstein Apr. 22, 1952 FOREIGN PATENTS 393,630 Great Britain June 9,1933

